Avalanche forecast

Northwest Inland

Jan 12 – 13, 2013Avalanche Canada
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Archived · expired 14 years ago

Avalanche danger

Mon
Tue
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    Be alert for wind slabs behind terrain breaks such as ridges, ribs and gully walls.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–5
    A deeply buried facet/crust weakness exists near the base of the snowpack. This layer could be triggered by large loads such as a cornice collapse or from a thin-spot trigger point.

Confidence

Poor - Due to limited field observations

Weather Forecast

Sunday: Light to moderate NW wind. Alpine temperature near -3. Light snow.Monday: Moderate NW wind. Alpine temperature near -1. Light snow.Tuesday: Moderate SW wind. Alpine temperature near -3. Light to moderate snow.

Avalanche Summary

No avalanches have been reported recently.

Snowpack Summary

Up to 25 cm of recent snow is sitting over a weak, faceted old snow surface. Loose dry sluffing is likely in steep terrain sheltered from the wind. In wind-affected areas, wind slabs have formed behind terrain breaks such as ridges and ribs. A strong mid-pack overlies a weak base layer of facets and the remnants of a crust. New surface hoar growth at the surface may develop into a weak layer once buried with further snowfall.

Regions covered